X p pump and motor



B. V. NORDBERG.

PUMP AND MOTOR.

APPLICATION FILED FEB.5.191I.

5 SHEETS-SHEET I.

Patented Sept. 9, 1919.

8. v. NORDBERG.

PUMP AND MOTOR.

APPLlCATlON FILED' MB. 5. I917.

1 ,8 1 5,680. Patented Sept. 9, 1919.

6 SHEETSSHEET 2.

3 under,

8. v. NORDBERG.

PUMP 'AND MOTOR.

APPLICATION FILED FEB. 5. I917.

1,315,680. Patented Sept. 9-, 1919.

6 SHEETSSHEET 3.

Q MN MW @Hozucp B. V. NORDBERG.

PUMP AND MOTOR.

APPLICATION FILED FEB. 5. 19:1.

1,315,680'. Patented Sept. 9, 1919.

6 SHEETS-SHEET 4.

B. V. NORDBERG.

PUMP AND MOTOR.

APPLICATlON FILED FEB. 5. 19:1.

Patented Sept. 9, 1919.

6 SHEETSSHEET 5.

B. V. NORDBERG.

PUMP AND MOTOR.

APPLiCATlON FILED FEB. 5.1917.

gwuemtoz n Patented Sept. 9, 1919.

6 SHEETSHSHEET 6.

nmll I .16. --ml Jig av Llmmm" UNITED STATES PATENT OFFICE.

BRUNO V.. NORDBEBG, OF MILWAUKEE, WISCOIISIN.

- Polar AND moron- Specification of Letters Patent.

Patented Sept. 9, 1919.

Application filed February 5, 1917. Serial No. 146,745.

To all whom it may concern..-

Be it known that I, Blame V. Noimnnne,

a. citizen of the United States, residing at 1 in rotary pumps of that type in which aseries of plungers or pistons are reciprocated so as to pro ml the fluid in a constant regular stream without any checks or momentary interruptions to its flow. It has for its object the provision of means orv mechanism forimparting to the plungers or pistons the required rapid and successive reciprocation to produce the desired result.

In a general way the invention is adapted to operation in accumulator systems where it is desired to store a reserve pressure for intermittent use, such as is employed in the operation of hoisting engines, brakes, clutches, reversing gear and like appliances in which an intermittent application of power is required.

The invention is particularly adapted to pumping oil in lubricating systems and.

where a high pressure is desired as in fluid presses, and also for hydraulic pumping where a flow of considerable volume is required, and embodiments of the invention to these ends will be particularly described.

The invention conslsts in the novel construction, combination and arrangement of parts, hereinafter described, pointed out in the appended claims,and illustrated by the ac ompanying drawings.

In the drawings, in which similar reference characters designate corresponding parts,

Figure 1 is a perspective view showing one embodiment of the invention.

Fig. 2 is a longitudinal sectional view of the same.

Fig. 3 is a sectional view on the line 0o of Fig. 2.

Fig. ei is a sectional view on line d-d of Fig. 2.

Fig. 5 is a sectional view on the line bb 01 Fig. 2; i i

Fig. (i is a sectional 'view on the line 0-0 of Fig. 2.

Fig. 7 is a longitudinal sectional view of a second embodiment of the invention.

. Fig. 8 is a sectional view on the line m-w of Fig. 7-.

Fi 9 is a sectional view on the line w w of Flg. 7.

Fi 10 is a sectional view on the line 0-0 of Fig. 7.

Fig. 11 is a plan view of the face of the head.

Fig. 12 is a longitudinal sectional view of a third embodiment of the invention.

Fig. 13 is an enlarged plan view of the face of one of the heads.

Fig. 14 is a longitudinal sectional view through one of the arms of the pump at right angles to the section shown in Fig. 12.

Figs. 15, 16, 17 and 18 are detail perspective views of the'component parts of one of the rotors and its adjuncts.

Figs. 19 and 20 are similar views of the \vearplate and the face of one of the heads.

The embodiment of the invention. disclosed in Figs. 1 to 6, inclusive, is particular'ly adapted to the pumping of oil in lu mately tangent to each other. Each rotor I is held against longitudinal movement by the flange 3 at its outer end turning in a corresponding bearing in the housing, and. by the head 4: rcmovably secured to the housing against the outer end of the rotor.

By removin the head 4 the rotor can be 7 easil tendmg through each rotor, is a series of longltudmal bores or bearings 5. concen-. trically arranged around the'axls 'of the rotor and circularly s aced, equal distances at part. These longitu inal bore's are preferably sixin number, but the "number may be varied to meet diiferent'requirements. As

the axes of the two rotors are at ri ht angles to each other their longitudina bores hare also at'right angles to each other.

A series of impellers (3 operate to transmit motion from one rotor to the other. Each impeller comprises two arms at right angles withdrawn from the housing. Ex-

40 bores rom the compartment 15, the chanrotor. Each impeller arm has a reciproca tive as Well as arotatable movement in its respective bore when the rotors are turned.

One of the rotors, the horizontal one as.-

shown in the drawings, has an integral shaft 7 axially extending from its outer end through the adjacent head 4 and the stuih ing-box 8 thereon. By any suitable mechanism the shaft can be driven so as to rotate its integral rotor. From the driven rotor, turned in the direction indicated by the arrow in Fi 1, rotating motion is transmitted through t e impellers 6 to the other rotor. The simultaneous turnin of the two rotors causes a reciprocation o the impeller arms in their respective bores so that they act as pistons therein.

In one side of the housing 1 is the induction chamber 9 into which leads the inlet pipe 10, and in the other side of the housmg is the eduction chamber 11 from which leads the outlet pipe 12, the two chambers being separated by the wall 13. The chamber 9 and the inlet pipe 10 constitute the induction port on one side of the device, and the chamber 11 and the outlet pipe 12 constitute the .eduction port on the other side of the device. Through the channels 14: the induction chamber 9 communicates with the compartments 15 in the two heads 4. The compartment 15 in each head is so positioned as to communicate with the outer ends or mouths of the bores 5 of the adjacent rotor while the impeller "arms in such bores are moving awayfrom the head while the rotor turns. In this movement the impeller arms act as istons to produce a suction into their nel 14, the chamber 9 and the inlet pipe 10. Fluid following thisv passage is taken up in the buckets formed by the bores and rece 4 ing pistons as the mouths of the buckets pass the compartment 15.

The eduction chamber 11, from which leads the outlet pipe 12, communicates through the channels 16 with the compart ments 17 in both heads 4, the compartment 17 in each head being separated from the adjacent compartment 15 by the wall 18 passing through the axial line of the adjacent rotor. he compartment 17 in each head is so positioned as to communicate with the oilter ends of the bores 5 of the adjacent rotor while the impeller arms in such bores, are moving toward the outer end ofthe rotor as the latter turns. This piston movement of the arms pirojects any fluid c ets into the compropelled through the channel 16 into the eduction chamber 11- and is discharged through the outlet pipe 12.

arms into t Durin the revolution of a rotor all of the imp'e ler arms make a complete back and forth stroke in their respective bores. The relative arrangement of the rotor and the compartments 15 and .17 is such that the outerends or mouths of the bores 5 register with the compartment 15 while the impeller arms are moving inwardly, and so that the mouths of the bores register with the compartment 17 while the impeller arms are moving outwardly. The transitory movement of the impeller arms, the changing bf the direction of stroke, takes place while the mouths of the bores are passlng the wall 18 between the compartments 15 and 17, the wall closing the mouths during the transitorX intervals.

the mouths of the bores or buckets s'uccessively pass the compartment 15, through the piston action of the impeller arms receding in the bores, the fluid contained in the compartment is sucked up by the buckets. As the buckets pass the outer end of the wall 18 and successively register with the compartment 17, the impeller arms having changed the direction of their stroke from suction to I'OPlllSlOIl as the bores pass the wall, thefluid carried by the buckets is projected b the return piston action of the e compartment 17 from which the fluid is forced through the channel 16 into the eduotion chamber 11 and discharged through the outlet pipe 12. When the buckets or mouths of the bores ass the inner end of the wall 18 the impel or arms a ain change the direction of their stroke rom propulsion to suction, thereby completing the cycle of operations.

As each impeller arm and its bore constitute a pump, and as the induction port sue cessively communicates with such pumps of both rotors during the suction action of the pumps, and as the eduction port successively communicates with the pumps during their propulsion action, and as the rotors are driven at a very high rate of speed, one thousand rotations a minute in actual practice,the fluid passes through the device with a constant rapid flow having a volume dependingupon the size of the machine.

While the device has been described as one for propelling fluids, yetit can be readily operated as a motor. Fluid under pressure entering the induction port and im inging on the ends, of the impeller arms wi l reci rocate the latter and cause a rotation of t e rotors. v

The embodiment of the invention illus trated by'Figs. 7 to 11, inclusive, is particularly designed to operate against high presmade of a single piece of metal as in the 180 31 projecting from the head 25.

former embodiment. The purpose of dividwhich are journaled the arms of the impellers 24.

The outer end of the body art ofeach rotor 22 is conically sha ed an is journaled in a concave bearing in t e adjacent head 25. Integral with and projecting from the outer end rotor is the spindle 26 extending through the head 25. At the inner end of the spindle is the bearing 27 journaled in the adjacent head and extending beyond the latter. On the projecting end of the bearing 27 is the loose collar 28 held inplace against the head by the nut 29 turned onto the spindle. By adjusting the nut the longitudinal play of the rotor can be regulated. The outer end of the spindle 26 is journaled in the cap 30 secured in the outer end of the annular flange On the outer end of the spindle 26 of the horizontal rotor is the pulley 32 to receive a belt for driving the rotors, motion being transmitted from the driven rotor to the other one by the im ellers. I

n opposite sides of, the housing 21 are the induction and eduction ports 33 and 34, re-

s ectively. Through the channels 35 the in- (notion port connnuhicatcs with the compartments 36 in the heads 25 adjacent to the outer ends of the rotors. Each compartment 36 communicates with the outer ends of the bores 23 of the adjacent rotor while the impeller arms in such bores are moving inwardly to produce a suction into the compartment from the induction port 33 and channel 35. Through the channels 37 the eduction port 34: communicates with the compartments 38 in the heads 25 adjacent to the outer ends of the rotors. Each compartment 38, separated from the suction compartment 36 by the partition 39, communicates-with the outer ends of the bores 23 of the adj acentrotor While the impeller arms therein are'moving outwardly to produce a propulsion effect through the compartment 38, the channel 37 and the eduction port 34. As the rotor turns, the impeller arms in passing the outer end of the partition 39 change from the suction movement to the.

propulsion movement, and when they pass the-inner end of the partition the arms again change from the propulsion to the suction movement. By these movements of the impeller arms in both rotors and the rapid rotation of the latter the fluid is smoothly and evenly driven through the pump in constant streams.

It is to be observed that the mouths or openings of the bores 23 into the compartments 36 and 38ers at an obtuse angle to the axes of their respective rotors and pass through the inclined faces of the conical bearin s at the inner ends of the rotors. By so positioning the-mouths or bucket open: ings of the bores they can be given a greater cross-area than in the first embodiment, which permits the fluid to flow more easily between the compartments and the bores. The conical bearing at the inner end of each rotor also permits the use of longer impeller arms, as compared with those in the first embodiment. The use of the longer impeller arms is an advantage where the pump is acting against high pressure, for the arms having longer hearings in their respective bores during their reciprocation and rotation therein have less tendency to bind than they would have with shorter bearings. (It is to be noted that Fig. 7, showing the second embodiment. of the invention, is made on a much smaller scale than Fig. 2 showing the first embodiment.)

The use of the conical bearings between the inner end of the rotor'and the adjacent head, together with the extended bearing 27, the loose collar 28 and the nut 29, facilitate the lubrication of the wearing parts. of the rotor. Some of the oil that is being pumped is forced by the propelling movement of the impeller arms from the compartment 38 be tween the conical bearings at the inner end of the rotor and the adjacent head. In the preliminary adjustment of the parts the nut 29 is first set tightly againstthe collar 28 to clamp the latter against the bearing 27, then it is slightly turned back to permit a slight separatlon of the different bearing surfaces. This separation permits the oil to pass from the compartment 38 into the s )ace formed by the separation to form a lm between the different bearing surfaces. In this way a thorough luln'ication of the bearing surfaces of the rotor is obtained.

The embodin'ient of the invention disclosed in Figs. 12 to 20, inclusive. isparticularly adapted to the pumping of water where streams of considerable volume are required;

In this third embodiment the housing 40 is divided longitudinally to facilitate the assembling and mounting of the different parts as in the second embodiment. In this housing are journaled the rotors 41 with their axes at right angles to each other. Through each rotor parallel to its axis pass the bores 42 in which are journalcd the reciprocative arms of the impellers 43. Each of the rotors has a shaft or spindle 44 passing through. the rotor being clamped between the nut 45 and washer on the inner endof theshaft and the shoulder 46 at the head a packing 48 is compressed around the shaft between the nut 49 and the plate 50 seated in an annular recess in the head.

shaped as to produce an acceleration of fluid as it enters the pump and a. retardation when it leaves the pump, so as to gradually change in the induction port the low velocity in the inlet pipe into a higher velocity corresponding to the piston speed of the impeller arms, and so as to change in the eduction port the comparatively ,high velocity of the piston speed to the required lower. speed of the discharge .pipe.

On one side of the partition 54the induction port 52 communicates with the mouths of the bores 42 as the impeller arms in such bores are moving inwardly to roduce a suction 'so that the bores will talie up the fluid, and on the other side of the partition 54 the eduction port 53 communicates with the mouths of the bores as the impeller arms are moving outwardl -therein to produce a propulsion of the fl llid contained in the bores through the eduction port. The impeller arms change the direction of their stroke as they-pass over the partition 54.

In the housin 40 over the inner ends of the rotors 41 an the angles-of-the impellers I 1' as to force. the lubricant between t e bearwall of the housing, the flange serving to i hold the bushing against longitudinal move-- ment. Between the flan 57 and the flan e 58 on the'outer end 0 the rotor are t e vpacking" rings 59 around the rotor. The

aokmg rings are clamped, against the P a flange 57 by the follower 60 secured to the forced from the chamber 55 between the inner ends of the rotor and bushing;

housing 'byccrews 61'. The packing rings prevent leakage from between the outer en s of the rotor and bushing of the lubricant in the rotation of each rotor 41 the greatest wear takes place between its outer face pressure of and the opposing head 47. Between these wearing surfaces a lubricant hannot be inand inside of the annular plate is seated the cross-plate 65, removably secured to the partition 54. On opposite sides of this cross-plate and inside of the annular plate the induction and eduction ports 52 and 53, respectively, communicate with the mouths of the bores 42. The plates 62, 64 and 65 are formed of non-corrodible material'so as to be unaffected by any chemicals that the passing water might contain, and as they are removable they can be readily replaced when worn.

While I have shown in the various forms or embodiments of my invention the impellers extending at right angles to each other, it is of course conceivable that they can be placed at any other angle greater than and short of 180. By the employ- .ment of the impellers at 90 from each other I attain the longest stroke possible, though where the angle is over 90 a somewhat easier drive may be attained with a consequent reductionof stroke. In every instance, however, the axes of the bores into which the impellers extend would of course lie parallel to the axis of the rotor, and the axes of the two rotors would have the same angular relationship to each other as the.

angular relation of the two elements of the imgeller.

hat I claim, is: v

1'. In a device of the character described, a

. housing having induction and eduction ports,

a cross partition forming induction and eduction chambers commun cating respectively with said ports, cylindrical rotors journaled-in the housing with their axes at right angles to each other and each rotor having a bore, garallelwith its axis and being so tmounte alternately passes from one side to the other of said partition and communicates alternatel cham ers as such rotor turns, and an ,1m-.

peller having arms-at right angles, to' each that the mouthof itsbore.

with the induction and eduction .120

other'with an arm journaled in the bore of each rotor, saidimpeller operat ng to trans-j mit motion between the rotors as one of them is driven-and the arms of the impeller reciprocating in the rotor bore that communicates with the chambers so as to produce in the'bore a suctio'nwhen its mouth communi-' cates with they induction {chamber and to produce a propulsion when the mouth of the gore communicates with the eduction chamer. a

2. In a device of the character described, a housing having induction and eduction ports, a cross partition forming induction and eduction chambers communicating respectively with said ports, cylindrical rotors journaled in the housing with their axes at right angles to each other and each rotor having a bore parallel with its axis and the rotors being so mounted that the mouths of their bores pass from one to the other side of the partition "and successively communicate with the induction and eduction chambers as the rotors turn, and an impeller having arms at right angles to each other with an arm journaled in the bore of each rotor, said impeller operating to transmit motion between the rotors as one of them is driven and the arms of the impellers reciprocating in their respective horse to produce in each bore a suction when its mouth communicates with the induction chamber and to produce in each bore a ropulsion when its 'mouth communicates w1th the eduction chamber.

3. In a device of the character described, a housing having induction and eduction ports, a cross partition therein forming induction and a eduction chambers, cylindrical rotors journaled in the housing wth their axes at right angles to each other and each rotor having a plurality of bores parallel with its axis and the rotors so mounted that the mouths of their bores successively communicats with the induction and eduction chambars as the rotors turn, and a plurality of impellers with each having arms at right angles to each other j ournaled in the bores of the rotors said impellers operating to transmit motion between the rotors as one of the rotors is driven and the arms of the impellers reciprocating in their respective bores so as to produce in each bore a suction when its mouth communicates with the induction chamber and to produce a propulsion in each bore when its mouth communicates with the eduction chamber.

4. In a device of the character described, a housing having I induction and eduction chambers provided with ports leading to the exterior of the housing, duplicate cylindrical rotors journaled in the housing with their axes at right angles to each other and each rotor having 'a plurality of bores parallel with its axis, a plurality of im ellers with each having arms at right ang es to each other journaled in the bores of the duplicate rotors, said impellers operating to transmit motion from one rotor to the other as either rotor is driven, the arms of the impellers reciprocating in their respective bores to produce suction and ropulsion in the outer ends of the bores, a ead secured to the housing over the outer end of each rotor, each head having a compartment communicating with the induction chamber in, the housing and registering with the outer ends of the bores as suction is produced in the latter, and each head having a second compartment communicating with the eduction chamber in the housing and registering with the outer ends of the bores as propulsion is produced therein.

5. In a device of the character described, a pumping mechanism comprising a housing with induction, and eduction ports, a rotatable cylindrical rotor journalcd in the housing having a conical bearing at one end and said rotor having a plurality of bores parallel with its axis with the mouths of the bores leading through the conical bearing ofthe rotor. and operatin to comn'mnicate successively with the indi orts, and reciprocatin piston arms in the ores operating to pro uce suction through the mouths of the bores as such mouths com: municate with the induction port and said arms operating to a produce propulsion through the mouths of the bores as such mouths communicate with the eduction port.

6. In a device of the character described,

-a pumping mechanism comprl ing a housbearing of the rotor, anaxial spindle pro-o jecting from the conical bearing end of the rotor through the head, a collar on the spindle outside of the head, a nut on the spindle outside of the collar to regulate the space'between the conical bearing of the rotor and the concave bearing of the head, and reciprocating piston arms in the bores of the rotor operating to produce suction.

through the mouths of the bores as such mouths communicate with the induction port and said arms operating to produce propulsion through the mouths of the bores as such mouths communicate with the eduction port.

7. In a device of the character described, a pumping mechanism comprising a housing with induction and eduction orts, a rotatable cylindrical rotor journale in the housing having a conical hearing at one end and said rotor having a plurality of bores parallel with its axis with the mouths of said bores leading through the conical bearing, a head secured to the housing with a concave bearing to register with the conical bearing of the rotor, an axial spindle projecting from the conical bearing end of the rotor throufli the head, a collar on the lotion and eduction spindle outside, the head, a nut on the spindle to clamp the collar against the head to regulate the play between the surfaces of the conical bearing of the rotor and the concave bearing of the head, reciprocating piston arms in the boxes of the rotor to head with the mouths of the bpres as suc-t tion is produced in the latter, and said head also having a second compartment communicating through the concave bearing of the head with the eduction port and registering with the mouths of the bores as propulsion is roduced in the latter.

8.,In a evice of the character described, a pumping mechanism comprising a housing with induction and eduction ports, a rotatable cylindrical rotor journaled in the housing having at one end a conical bearing turning in an opposite concave bearing and said rotor having a plurality of bores parallel with its axis with the mouths of said bores leading through the conical bearing and operating to communicate successively with the induction and eduction ports, piston arms reciprocating in the bores of the rotor to, produce suction in the mouths of the bores as the latter communicate with the induction port and to produce propulsion in the months as the latter communicate with the eduction port, and means for axially adjustin the rotor to regulate the space between t e conical and concave bearings.

9. In a device of the character described, a housing having induction and eduction ports and intermediate channels, a air of rotors with axes at an angle to eac other and provided with longitudinal bores, means for driving one of said rotors and impellers having arms reciprocating in the bores operating as pistons to pro el fluid through the intermediate channels rom the induction to the eduction ports, said im pellers also operating to transmit rotary motion from the driven rotor to the other. In testimony whereof I have signed my name to this specification. q

BRUNO v. NoRnBERG. 

